Tensile testing machine is widely used in thin film tensile test, which is mainly used to evaluate the mechanical properties and deformation ability of thin film materials in the tensile process. The following is a detailed analysis of the film tensile test of the tensile testing machine:
1.Working principle
Tensile testing machine through the controller, the speed control system to control the servo motor rotation, decelerated by the deceleration system through the precision screw pair to drive the beam up or down, so as to exert tension on the film sample. During the tensile process, the load sensor measures the tensile value in real time, and the change of tensile force and sample extension length is recorded by the data acquisition system. Finally, through the data analysis software to process the recorded data, the film tensile strength, elongation and other performance indicators.
2.Test steps
Prepare the sample: Use a special tool to cut the rectangular sample from the film material to meet the requirements, ensuring that the sample size is appropriate and the edge is not damaged.
Clamp the sample: Place both ends of the sample in the fixture of the tensile testing machine, and adjust the fixture to ensure that the sample is firmly gripped and aligned.
Set test parameters: set preloading force, tensile speed and other parameters according to test requirements.
Start stretching: Start the tensile testing machine and gradually apply tension so that the sample extends in the tensile direction.
Recording data: During the drawing process, the change of tensile force and sample extension length is recorded in real time.
Specimen fracture: Continue to stretch the specimen until it breaks, record the maximum tensile force and the extension length of the break at the time of fracture.
Data analysis: The recorded data are processed and analyzed to obtain the tensile strength, elongation and other performance indicators of the film.
3.Common test methods
Longitudinal tensile test: the main test film in the longitudinal direction of tensile strength, elongation and other performance indicators.
Transverse tensile test: similar to longitudinal tensile test, but mainly tests the tensile properties of the film in the transverse direction.
Tear test: test the tear strength and tear elongation of the film, by applying tension to make the film tear at a certain tear Angle.
Other test methods: such as impact test, friction coefficient test, etc., appropriate test methods can be selected according to specific needs.
4. Scope of application
Tensile testing machine film tensile test is widely used in wire and cable, building materials, aerospace, machinery manufacturing, rubber plastics, textiles, home appliances and other industries of material inspection and analysis. At the same time, it is also the ideal test equipment for scientific research institutions, colleges and universities, industrial and mining enterprises, technical supervision, commodity inspection arbitration and other departments.
5. Test standards
Film tensile testing machine in the film tensile test, should follow the relevant national and international standards, such as GB/T 1040.3-2006 “plastic tensile properties of the determination of Part 3: film and wafer test conditions” and so on. These standards specify the requirements of test conditions, sample preparation, test steps, data processing, etc., to ensure the accuracy and reliability of test results.
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Post time: Aug-06-2024